Nokia RM-243 - Page 78

Loop test Input
terminal
Output
terminal
Path
gain
[dB]
(fixed)
Input
voltage
[mVp-
p]
Output
voltage
[mVp-p]
Output
DC level
[V]
Output
current [mA]
External Mic to
External
Earpiece
HS_MIC &
GND
HS_EAR_L &
GND
-8.6 1000 367 1.2 NA
HS_EAR_R &
GND
External Mic to
Internal
Earpiece
HS_MIC &
GND
EarP & GND -10 1000 310 1.2 NA
EarN & GND
External Mic to
Internal
handsfree
HS_MIC &
GND
J2100 -6 1000
J2101
Digital Mic to
External
Earpiece
Acoustical
input, 1kHz
sine wave
HS_EAR_L &
GND
NA 94 dB
SPL
100 NA
HS_EAR_R &
GND
Measurement data
Earpiece signal
Figure 15 Single-ended output waveform of the Ext_in_HP_out measurement when earpiece is connected.
Integrated handsfree signal
RM-243
BB Troubleshooting and Manual Tuning Guide
Page 3 –34 COMPANY CONFIDENTIAL Issue 1
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